The Nav lockout is yet another example of corporate compliance versus customer service IMO. I personally find this to be a safety hazard versus a feature. I use my phone frequently in the car (with the bluetooth feature), so instead of using the large buttons on the nav screen, I use the small buttons on my phone. I'm responsible enough to do this without causing an accident. I agree with an earlier post, where my wife or kids easily work the other features when I'm driving (put a sensor in the seat for pete's sake).
With the money we are paying for these vehicles, someone will come up with an override chip I will gladly pay for to have this resolved.
I apologize for the ranting but I'm getting really fed up with the government and the bar holding manufactures accountable for stupid individual behavior.
Hopefully, capitalism will come to the rescue.